HS-PS1-4
Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
Clarification statement: Emphasis is on the idea that a chemical reaction is a system that affects the energy change. Examples of models could include molecular-level drawings and diagrams of reactions, graphs showing the relative energies of reactants and products, and representations showing energy is conserved.
Assessment boundary: Assessment does not include calculating the total bond energy changes during a chemical reaction from the bond energies of reactants and products.
Resources
Examples and discussion of resources for the learning, teaching, and assessment of HS-PS1-4.
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Assessment
What assessment of HS-PS1-4 might look like on a NY state exam.
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NGSS Dimensions
Performance expectation HS-PS1-4 was developed using the following elements from the NRC document A Framework for K-12 Science Education: